电流互感器二次侧具有多组绕组，若仅使用一组绕组，则为保证计量的准确性，其余绕组应保持开路状态。（）
参考答案：错
To complete the project as planned, the workers were busy working all day, only ______ a short rest once in a while.
A．to take
B．to have taken
C．having taken
D．taking
A．
B．
C．
D．
